Value Collection 223-1150 Offset Boring Head R8 Taper

Product Description

The VALUE COLLECTION 223-1150 is an offset boring head designed for precision bore enlargement and finishing operations on milling machines and machining centers. With a 2.5-inch body diameter and an integral R8 taper shank mount, this tool is built for direct, rigid connection to the spindle without a separate adapter. The overall length of 7-3/16 inches keeps the tool extension moderate, supporting stable cuts. It is installed and used by machinists and tool-and-die professionals in job shops, maintenance facilities, and production environments.

This offset boring head is suited for single-point boring operations on knee mills and vertical machining centers equipped with R8 spindles, which are common in small-to-medium machine shops. The integral taper shank eliminates adapter stacking, reducing runout and improving bore accuracy. Typical applications include opening existing holes to precise diameters, cleaning up rough bores, and finish-boring bearing fits, bushing bores, and housing seats.

Key Features

• 2.5-inch body diameter provides a solid platform for extended boring ranges
• R8 taper integral shank mount for direct spindle engagement on compatible mills
• Offset head type allows fine diameter adjustments for precise bore sizing
• 7-3/16-inch overall length balances reach with rigidity
• Integral mount design eliminates adapter stacking and reduces runout

Compatibility

Designed for use with milling machines equipped with an R8 taper spindle. Confirm spindle taper type before installation.

Installation Notes

Installation should be performed by a qualified machinist familiar with milling machine tooling and setup procedures. Power down and lock out the machine spindle before inserting or removing the boring head. Secure the R8 shank fully into the spindle with the appropriate drawbar and torque to the machine manufacturer specification. Verify tool runout with a dial indicator before taking any cuts.